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Founded in 1987, we are a non-profit, professional association for biomedical scientists interested in research involving the neurotransmitter serotonin (5-hydroxytryptamine).

Serotonin Researchers:

Due to the coronavirus pandemic, our upcoming biennial meeting “Serotonin on the Mexican Caribbean” originally scheduled for July 26-29, 2020 in Cancun Mexico, will be postponed to 2022.


UPDATE: Our biennial meeting is rescheduled for April 24-28, 2022. 

Further details regarding registration and abstract submission deadlines for the 2022 meeting will be forthcoming in the next few weeks.


Everyone who has already registered may roll over their registration to the rescheduled meeting. Alternatively,  refunds for registration fees are available without any deadlines [please note that if you request a refund you may receive the registration fee minus the Paypal fee, or for those who paid by wire transfer, minus bank fees]. Please contact Dr. Kelly Berg (berg [at] uthscsa.edu) if you have questions or wish to request a registration fee refund.  

Further details will be forthcoming in the next couple of weeks. Please check here often for the latest information.


Please stay healthy and safe!



The ISSR 2020 Meeting Organizing Committee

Important ISSR 2022 Meeting Deadlines

Meeting Registration



Abstract Submission






We look forward to seeing you in Cancún!

See our new In Memoriam page for tributes

to serotonin scientists we have recently lost.

Join us in Cancún for our

20th International Meeting

in 2022!

“Serotonin on the Mexican Caribbean”

Marriott Cancún Resort 

Cancún, Mexico  


April 24-28, 2022